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- Minor optimization (avoid to re-hash already computed var name hash)

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This commit is contained in:
Felipe Pena 2011-06-19 21:56:09 +00:00
parent 335cf2fc23
commit d6f5f3782b
2 changed files with 12 additions and 9 deletions
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20
Zend/zend_compile.c
View File

@ -291,10 +291,10 @@ static zend_uint get_temporary_variable(zend_op_array *op_array) /* {{{ */
}
/* }}} */
static int lookup_cv(zend_op_array *op_array, char* name, int name_len TSRMLS_DC) /* {{{ */
static int lookup_cv(zend_op_array *op_array, char* name, int name_len, ulong hash TSRMLS_DC) /* {{{ */
{
int i = 0;
ulong hash_value = zend_inline_hash_func(name, name_len+1);
ulong hash_value = hash ? hash : zend_inline_hash_func(name, name_len+1);
while (i < op_array->last_var) {
if (op_array->vars[i].name == name ||
@ -642,7 +642,7 @@ void fetch_simple_variable_ex(znode *result, znode *varname, int bp, zend_uchar
(CG(active_op_array)->last == 0 ||
CG(active_op_array)->opcodes[CG(active_op_array)->last-1].opcode != ZEND_BEGIN_SILENCE)) {
result->op_type = IS_CV;
result->u.op.var = lookup_cv(CG(active_op_array), varname->u.constant.value.str.val, varname->u.constant.value.str.len TSRMLS_CC);
result->u.op.var = lookup_cv(CG(active_op_array), varname->u.constant.value.str.val, varname->u.constant.value.str.len, 0 TSRMLS_CC);
varname->u.constant.value.str.val = CG(active_op_array)->vars[result->u.op.var].name;
result->EA = 0;
return;
@ -882,6 +882,7 @@ static zend_bool opline_is_fetch_this(const zend_op *opline TSRMLS_DC) /* {{{ */
{
if ((opline->opcode == ZEND_FETCH_W) && (opline->op1_type == IS_CONST)
&& (Z_TYPE(CONSTANT(opline->op1.constant)) == IS_STRING)
&& (Z_HASH_P(&CONSTANT(opline->op1.constant)) == THIS_HASHVAL)
&& (Z_STRLEN(CONSTANT(opline->op1.constant)) == (sizeof("this")-1))
&& !memcmp(Z_STRVAL(CONSTANT(opline->op1.constant)), "this", sizeof("this"))) {
return 1;
@ -1290,7 +1291,7 @@ void zend_do_end_variable_parse(znode *variable, int type, int arg_offset TSRMLS
this_var = opline_ptr->result.var;
if (CG(active_op_array)->this_var == -1) {
CG(active_op_array)->this_var = lookup_cv(CG(active_op_array), Z_STRVAL(CONSTANT(opline_ptr->op1.constant)), Z_STRLEN(CONSTANT(opline_ptr->op1.constant)) TSRMLS_CC);
CG(active_op_array)->this_var = lookup_cv(CG(active_op_array), Z_STRVAL(CONSTANT(opline_ptr->op1.constant)), Z_STRLEN(CONSTANT(opline_ptr->op1.constant)), Z_HASH_P(&CONSTANT(opline_ptr->op1.constant)) TSRMLS_CC);
Z_TYPE(CONSTANT(opline_ptr->op1.constant)) = IS_NULL;
} else {
zend_del_literal(CG(active_op_array), opline_ptr->op1.constant);
@ -1302,7 +1303,7 @@ void zend_do_end_variable_parse(znode *variable, int type, int arg_offset TSRMLS
variable->u.op.var = CG(active_op_array)->this_var;
}
} else if (CG(active_op_array)->this_var == -1) {
CG(active_op_array)->this_var = lookup_cv(CG(active_op_array), estrndup("this", sizeof("this")-1), sizeof("this")-1 TSRMLS_CC);
CG(active_op_array)->this_var = lookup_cv(CG(active_op_array), estrndup("this", sizeof("this")-1), sizeof("this")-1, THIS_HASHVAL TSRMLS_CC);
}
}
@ -1810,10 +1811,11 @@ void zend_do_receive_arg(zend_uchar op, znode *varname, const znode *offset, con
zend_error(E_COMPILE_ERROR, "Cannot re-assign auto-global variable %s", Z_STRVAL(varname->u.constant));
} else {
var.op_type = IS_CV;
var.u.op.var = lookup_cv(CG(active_op_array), varname->u.constant.value.str.val, varname->u.constant.value.str.len TSRMLS_CC);
var.u.op.var = lookup_cv(CG(active_op_array), varname->u.constant.value.str.val, varname->u.constant.value.str.len, 0 TSRMLS_CC);
varname->u.constant.value.str.val = CG(active_op_array)->vars[var.u.op.var].name;
var.EA = 0;
if (Z_STRLEN(varname->u.constant) == sizeof("this")-1 &&
if (CG(active_op_array)->vars[var.u.op.var].hash_value == THIS_HASHVAL &&
Z_STRLEN(varname->u.constant) == sizeof("this")-1 &&
!memcmp(Z_STRVAL(varname->u.constant), "this", sizeof("this")-1)) {
if (CG(active_op_array)->scope &&
(CG(active_op_array)->fn_flags & ZEND_ACC_STATIC) == 0) {
@ -2699,7 +2701,7 @@ void zend_do_begin_catch(znode *try_token, znode *class_name, znode *catch_var,
opline->op1_type = IS_CONST;
opline->op1.constant = zend_add_class_name_literal(CG(active_op_array), &catch_class.u.constant TSRMLS_CC);
opline->op2_type = IS_CV;
opline->op2.var = lookup_cv(CG(active_op_array), catch_var->u.constant.value.str.val, catch_var->u.constant.value.str.len TSRMLS_CC);
opline->op2.var = lookup_cv(CG(active_op_array), catch_var->u.constant.value.str.val, catch_var->u.constant.value.str.len, 0 TSRMLS_CC);
catch_var->u.constant.value.str.val = CG(active_op_array)->vars[opline->op2.var].name;
opline->result.num = 0; /* 1 means it's the last catch in the block */
@ -5642,7 +5644,7 @@ void zend_do_indirect_references(znode *result, const znode *num_references, zno
fetch_simple_variable(result, variable, 1 TSRMLS_CC);
/* there is a chance someone is accessing $this */
if (CG(active_op_array)->scope && CG(active_op_array)->this_var == -1) {
CG(active_op_array)->this_var = lookup_cv(CG(active_op_array), estrndup("this", sizeof("this")-1), sizeof("this")-1 TSRMLS_CC);
CG(active_op_array)->this_var = lookup_cv(CG(active_op_array), estrndup("this", sizeof("this")-1), sizeof("this")-1, THIS_HASHVAL TSRMLS_CC);
}
}
/* }}} */

1
Zend/zend_compile.h
View File

@ -134,6 +134,7 @@ typedef struct _zend_try_catch_element {
zend_uint catch_op; /* ketchup! */
} zend_try_catch_element;
#define THIS_HASHVAL 275574653UL
/* method flags (types) */
#define ZEND_ACC_STATIC 0x01